摘要
以CuO为催化剂,利用超声波(US)、H2O2及US/H2O2降解苯酚模拟废水,考察了多种因素的影响,并对其降解动力学进行了分析.结果表明,CuO催化作用明显;H2O2投加量的增加对降解反应先促进后抑制;溶液pH值先升高后降低,当溶液初始pH值为5.50时,苯酚的降解效果最好.在溶液初始pH值为5.50,CuO加入量为1mg/mL,H2O2投加量为40mmol/L时,US/H2O2/CuO降解苯酚的速率常数(k)为3.04×10-2min-1,明显大于US、US/H2O2、H2O2/CuO处理下的k值(5.25×10-4,2.31×10-3,2.31×10-2min-1),降解过程均符合表观一级反应动力学.
The phenol simulated wastewater was degradated using CuO as catalyst, utilizing ultrasononic wave （US）, H2O2 and US/H2O2. The influence factors was inspected and its degradation kinetic were analyzed. CuO catalysis was obvious in the degradation process; the increase of H2O2 input amount promoted first and controlled next the degradation; the pH value of solution tended to raise first and lower next; the degradation effect of phenol was best at initial pH value of 5.50. At the pH value of 5.50, 1mg/mL CuO and 40mmol/L H2O2, the speed constant （k） of US/H2O2/CuO degrading phenol was 3.04×10 ^-2min^-1, greater obviously than the k （5.25×10^- 4,2.31×10^- 3,2.31×10^- 2min^- 1） under the treatment of US, US/H2O2, HROR/CuO. The degradation process all accorded with the first order reaction kinetic.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2006年第3期280-283,共4页
China Environmental Science
基金
华侨大学高层次人才引进科研启动基金资助(04BS311)
关键词
超声波
过氧化氢
氧化铜
苯酚
动力学
ultrasound
hydrogen peroxide： cuprum oxide, phenol
kinetic
